There was an old thread dated back to 2013, some reported dead-on accuracies between both, some said IR is way off. In my experience, on the same spot, i.e. on left side corner next to the door, it's almost exactly the same. IR on the door is reading 600F, a good 250F higher than the side door while stove top is much much cooler (with the fan off and well equilibrated). Even though the manual (thanks, bholler!)'s older version mentioned measuring from stove top NMT 890F, I guess the door and nearby not being shielded by firestones, hence, the temperature is much higher than stovetop and door side.